64492564247 has 2 divisors, whose sum is σ = 64492564248. Its totient is φ = 64492564246.

The previous prime is 64492564229. The next prime is 64492564271. The reversal of 64492564247 is 74246529446.

64492564247 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 64492564247 - 2¹⁸ = 64492302103 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64492564277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32246282123 + 32246282124.

It is an arithmetic number, because the mean of its divisors is an integer number (32246282124).

Almost surely, 2^64492564247 is an apocalyptic number.

64492564247 is a deficient number, since it is larger than the sum of its proper divisors (1).

64492564247 is an equidigital number, since it uses as much as digits as its factorization.

64492564247 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 53.

The spelling of 64492564247 in words is "sixty-four billion, four hundred ninety-two million, five hundred sixty-four thousand, two hundred forty-seven".